55439303 has 4 divisors (see below), whose sum is σ = 55459608. Its totient is φ = 55419000.

The previous prime is 55439299. The next prime is 55439309. The reversal of 55439303 is 30393455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30393455 = 5 ⋅6078691.

It is a cyclic number.

It is not a de Polignac number, because 55439303 - 2² = 55439299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55439303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55439309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5276 + ... + 11777.

It is an arithmetic number, because the mean of its divisors is an integer number (13864902).

Almost surely, 2^55439303 is an apocalyptic number.

55439303 is a deficient number, since it is larger than the sum of its proper divisors (20305).

55439303 is a wasteful number, since it uses less digits than its factorization.

55439303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20304.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 55439303 is about 7445.7573825636. The cubic root of 55439303 is about 381.3050764111.

The spelling of 55439303 in words is "fifty-five million, four hundred thirty-nine thousand, three hundred three".